<template>
    <div class="list" ref="wrapper">
      <div>
        <div class="area">
          <div class="title border-topbottom">当前城市</div>
          <div class="button-list">
            <div class="button-wrapper">
              <div class="button">{{ this.currentCity }}</div>
            </div>
          </div>
        </div>
        <div class="area">
          <div class="title border-topbottom">热门城市</div>
          <div class="button-list">
            <div class="button-wrapper" v-for="item of hot" :key="item.id" @click="handleCityClick(item.name)">
              <div class="button">{{ item.name }}</div>
            </div>
          </div>
        </div>
        <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
          <div class="title border-topbottom">{{ key }}</div>
          <div class="item-list">
            <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id" @click="handleCityClick(innerItem.name)">{{ innerItem.name }}</div>
          </div>
        </div>
      </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  methods: {
    handleCityClick (itemName) {
      this.changeCity(itemName)
      this.$router.push({ path: '/' })
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    ...mapState({
      'currentCity': 'city'
    })
  }
}
</script>

<style lang='stylus' scoped>
  .list
    overflow hidden
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0
    .border-topbottom
      &:before
        border-color #CCCCCC
      &:after
        border-color #CCCCCC
    .title
      height 0.54rem
      line-height 0.54rem
      background-color #eeeeee
      padding-left 0.2rem
      box-sizing border-box
      color #666666
      font-size 0.26rem
    .button-list
      padding 0.1rem 0.6rem 0.1rem 0.1rem
      overflow hidden
      .button-wrapper
        width 33.33%
        float left
        .button
          padding 0.1rem 0
          text-align center
          margin 0.1rem
          border 0.02rem solid #CCCCCC
          border-radius 0.06rem
    .item-list
      .item
        height 0.76rem
        line-height 0.76rem
        color #666666
        padding-left 0.2rem
      .border-bottom
        &:before
          border-color #CCCCCC
</style>
